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Table 2 Body composition, strength and maximal oxygen uptake pre- and posttraining

From: Combined protein and calcium β-hydroxy-β-methylbutyrate induced gains in leg fat free mass: a double-blinded, placebo-controlled study

 

WP + PLA (n = 7)

WP + HMB (n = 8)

Pre

Post

t

P

Cohen’s d

Pre

Post

t

P

Cohen’s d

Body composition

 Body mass, kg

80.3 ± 10.3

83.2 ± 11.4

− 2.9

0.33

− 1.10 (− 2.5, 0.3)

79.4 ± 9.6

82.8 ± 8.9

− 4.36

0.04

− 1.54 (− 3.1, − 0.03)

 FM, kg

15.6 ± 7.0

16.2 ± 7.2

−0.84

> 0.5

− 0.32 (− 1.42, 0.81)

14.0 ± 5.4

14.0 ± 4.8

0.03

> 0.5

0.01 (− 1, 1.02)

 FM, %

18.9 ± 7.4

18.9 ± 7.5

0.06

> 0.5

0.02 (− 1.06, 1.10)

17.4 ± 5.8

16.7 ± 5.0

0.87

> 0.5

0.31 (− 0.74, 1.34)

 CSAFFM arm, cm2*

55 ± 6

59 ± 8

− 4.86

< 0.01

−1.84 (− 3.72, − 0.06)

61 ± 13

67 ± 14

− 5.25

< 0.01

−1.86 (− 3.62, − 0.19)

 CSAFFM leg, cm2**

160 ± 16

166 ± 16

− 3.72

0.031

−1.41 (− 2.99, 0.14)

161 ± 24

168 ± 25

−5.53

< 0.01

−1.96 (− 3.78, − 0.23)

Maximal strength

 Bench press, kg

54 ± 13

66 ± 16

− 9.4

< 0.001

− 3.55 (− 6.76, − 0.73)

57 ± 12

69 ± 13

− 13.98

< 0.001

− 4.94 (− 8.98, − 1.43)

 Leg press, kg

177 ± 35

290 ± 60

−9.58

< 0.001

− 3.62 (− 6.89, − 0.76)

185 ± 52

286 ± 54

− 10.59

< 0.001

−3.74 (− 6.86, − 0.98)

Maximal oxygen uptake

 ml·min− 1

4.4 ± 0.5

4.3 ± 0.3

0.74

> 0.5

0.28 (− 0.84, 1.38)

4.3 ± 0.5

4.2 ± 0.5

0.41

> 0.5

0.14 (− 0.88, 1.16)

 ml·min− 1·kg− 1

55.0 ± 6.6

52.5 ± 7.2

1.9

> 0.5

0.72 (− 0.52, 1.93)

54.2 ± 4.1

51.5 ± 6.5

1.4

> 0.5

0.49 (− 0.6, 1.56)

  1. *n = 28 for arm CSAFFM (WP + HMB: n = 14, WP + PLA: n = 14
  2. **n = 26 for leg CSAFFM (WP + HMB: n = 12, WP + PLA: n = 14